eval_regex

Dynamic eval with regex

This example executes a dynamically selected eval fragment that calls preg_match(). Because the regex call is opaque to AOT feature detection, the project declares managed PCRE2 and compilation explicitly enables the runtime capability.

From this directory:

elephc native add pcre2
elephc --with-regex main.php
./main

The expected output is:

1:id:42

Without --with-regex, the program still compiles, but regex functions are not exposed to dynamic eval and a call to preg_match() fails at runtime.